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单词
Owl Nebula
释义
Owl Nebula
Encyclopedia
理学
行星状星云
释
Owl Nebula
夜枭星云
位于大熊星座的一个比较复杂的行星状星云。星表中的编号为M97和NGC3587。距离地球2030光年(621秒差距),视星等为9.9,年龄约8千年。又称猫头鹰星云。
Astronomy
Owl Nebula
夜枭星云
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coal dust cloud
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coalescer
coal exploration
coal facies
coal feeding system
coal field
coalfield extensional structure
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coalfield inversion structure
coalfield logging equipment
coalfield Logging quantitative evaluation
coalfield of South Africa
coalfield prediction
coalfield strike-slip structure
coalfield structure
coalfield thrust and nappe structure
coal fired combined cycle
coal-fired power plant fire
coal for coking
coal for liquid fuels
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更新时间:2026/9/2 13:24:45